My cobalt blue just passed away because of a bad molt. That means a free tall cage (I didn't keep my cobalt blue arboreal I just gave it a foot of dirt to burrow in). I decided to get a p subfusca. But before I think of buying it I have to know if this cage will work. It is 12x12x18 tall. The other arboreal cages i have seen appear to be a little taller. Also what is the difference between highland and lowland? Thanks.